A fastener for photovoltaic modules based on photovoltaic systems and a method for installing the same

Abstract

The application discloses a fastener for photovoltaic module based on a photovoltaic system and relates to the technical field of fasteners.The fastener comprises a pressing block and a T-shaped bolt, the T-shaped bolt comprises a T-shaped screw rod and a nut, the T-shaped screw rod comprises a screw rod part and a clamping part, and the pressing block comprises a U-shaped main body, the outer sides of the two side edges of the U-shaped main body are each provided with a pressing edge.The combination of the novel pressing block and the T-shaped bolt can ensure that the screw rod part keeps straight up and down during up-and-down movement, ensure the stability of the displacement of the clamping part, and make the clamping part not need to be in contact with the side edges of the photovoltaic support cross beam, so that the fastener is suitable for use with cross beams of different models, the nut used for lifting the screw rod part is located on the top plate, the nut is thus kept exposed on the upper surface of the photovoltaic module, the staff is facilitated to control, the tool used does not need to be inserted into the gap between two photovoltaic modules, and the installation efficiency and convenience are improved.

Description

Technical Field

[0001] This invention belongs to the field of fastener technology, and in particular relates to a fastener for photovoltaic modules based on a photovoltaic system and its installation method. Background Technology

[0002] For the installation of photovoltaic modules in a photovoltaic system, the photovoltaic modules are installed on the crossbeams of the photovoltaic bracket using fasteners (which consist of T-bolts and pressure blocks). Each pressure block presses and secures the sides of the two photovoltaic modules tightly on both sides.

[0003] In actual installation, the nut on the T-bolt is located on the bottom plate of the pressure block. Tools need to be inserted into the gap between the two photovoltaic modules to engage the nut, which is not conducive to quick operation by workers. At the same time, the transverse clamping part at the end of the T-bolt is located inside the crossbeam and needs to engage with the side of the crossbeam. That is, the direction of force between the clamping part and the side of the crossbeam is opposite to the tightening direction of the nut on the fastening bolt. This limits its applicability and cannot effectively ensure the positional stability of the fastening bolt, affecting the convenience and efficiency of installation. Summary of the Invention

[0004] The purpose of this invention is to provide a fastener for photovoltaic modules based on a photovoltaic system. By designing a novel combination of a pressure block and a T-bolt, and through the cooperation of a limiting groove and a positioning strip, the screw section can maintain a straight up-down state during its vertical movement, ensuring the stability of the clamping part's displacement. Furthermore, the clamping part does not need to contact the side of the photovoltaic bracket beam, making it suitable for use with different types of beams. At the same time, the nut used for lifting and lowering the screw section is located on the top plate, thereby ensuring that the nut is exposed on the upper surface of the photovoltaic module, which is beneficial for the operator's operation. The tools used do not need to be inserted into the gap between two photovoltaic modules, improving installation efficiency and convenience.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a fastener for photovoltaic modules based on a photovoltaic system, comprising a pressure block and a T-bolt. The T-bolt includes a T-shaped screw and a nut. The T-shaped screw includes a screw portion and a retaining portion. The pressure block includes a U-shaped body, and pressure edges are provided on the outer sides of both sides of the U-shaped body.

[0007] A partition is fixed between the two sides of the U-shaped body, and a top plate is fixed between the two pressing edges of the U-shaped body;

[0008] The top surface of the bottom edge of the U-shaped body is fixed with a support ring by a spring. The bottom edge, partition and top plate of the U-shaped body are all provided with openings. The screw part passes through the openings of the bottom edge, partition and top plate of the U-shaped body in sequence. The nut is located on the upper surface of the top plate.

[0009] A positioning strip is fixed through the middle of the screw section, and the two ends of the positioning strip are located on the outside of the screw section and form positioning heads.

[0010] Limiting grooves are fixed on both sides between the partition and the top plate. The limiting grooves are fixed on the inner side of the side of the U-shaped body. A clearance opening is provided on the partition and at the position opposite to the limiting groove. The inner end of the clearance opening extends into the through-hole on the partition.

[0011] The positioning head is disposed between the support ring and the partition plate. The bottom and top surfaces of the positioning head are movably connected to the top surface of the support ring and the bottom surface of the partition plate, respectively. The clearance opening and the limiting groove are both clearance-fitted with the positioning head.

[0012] Furthermore, a preset hole is provided in the middle of the screw section, and the positioning strip is interference-fitted into the preset hole.

[0013] Furthermore, a number of guide rods are fixed at the bottom end of the support ring, and a number of blind openings are provided on the upper surface of the bottom edge of the U-shaped body, with the bottom ends of the guide rods slidably disposed within the blind openings.

[0014] Furthermore, several of the guide rods are arranged in a ring at the bottom edge of the support ring, and the spring is located inside the several guide rods and outside the opening.

[0015] Furthermore, it also includes a photovoltaic module frame and a crossbeam for the photovoltaic support on the photovoltaic system. The crossbeam is a U-shaped beam with an inner folded edge on the upper inner part of both sides. The pressure block is fixed to the crossbeam by T-bolts, and the photovoltaic module frame is disposed between the crossbeam and the pressure edge.

[0016] Furthermore, the positioning strip and the retaining part on the screw part are arranged in a cross shape.

[0017] The present invention provides a method for installing fasteners for photovoltaic modules based on a photovoltaic system, comprising the following steps:

[0018] In the initial state of SS01, the holding part is distributed parallel to the pressure block, the positioning strip is restricted between the partition and the support ring and is distributed perpendicular to the relief opening, and the spring is in a contracted state;

[0019] SS02 places the pressure block between the two photovoltaic module frames. The two sides of the U-shaped body are respectively attached to the opposite sides of the two photovoltaic module frames. The pressure edge of the U-shaped body is pressed against the top edge of the photovoltaic module frame. The holding part is set in the crossbeam through the gap between the two inner folded edges.

[0020] SS03 rotates the end of the screw section located above the top plate by 90 degrees. The positioning head rotates 90 degrees synchronously between the partition and the support ring. After rotation, the positioning head is opposite to the clearance opening. The spring pops out and drives the positioning head to move into the clearance opening. After the clamping part rotates 90 degrees synchronously, both ends are located directly below the two inner folded edges on the crossbeam.

[0021] Rotating the SS04 nut causes the screw section to rise, which in turn causes the clamping part to fit against the two inner folded edges on the crossbeam for fastening. At the same time, during the rise of the screw section, the positioning head slides along the limiting groove to ensure that the screw section and the clamping part move upward in a straight line.

[0022] The present invention has the following beneficial effects:

[0023] 1. This invention, through the design of a novel combination of pressure block and T-bolt, and the cooperation of limiting groove and positioning strip, ensures that the screw part maintains a straight up-down state during its up-and-down movement, ensuring the stability of the clamping part's displacement. Furthermore, the clamping part does not need to contact the side of the photovoltaic bracket beam, making it suitable for use with different types of beams. At the same time, the nut used for lifting and lowering the screw part is located on the top plate, thereby ensuring that the nut is exposed on the upper surface of the photovoltaic module, which is beneficial for the operator's operation. The tools used do not need to be inserted into the gap between two photovoltaic modules, improving installation efficiency and convenience.

[0024] 2. The present invention, through the design of the partition and the lower spring, can limit the positioning strip by the elastic force before installation, ensuring the orientation of the lower clamping part, so that the clamping part can easily extend into the crossbeam without the problem of angle deviation, thus ensuring the convenience of installation.

[0025] 3. By setting a clearance opening on the partition, the nut can only be rotated when the positioning strip is aligned with the clearance opening. Before installation, the entire fastener is in a stable state, and the components will not loosen or fall off. There is no need to position it during installation, which is beneficial to the operator.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a fastener for a photovoltaic module based on a photovoltaic system according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the pressure block;

[0030] Figure 3 This is a structural diagram of a T-bolt;

[0031] Figure 4This is a schematic diagram of the structure after the T-bolt is rotated 90 degrees during installation of the present invention;

[0032] Figure 5 for Figure 4 Top view of the structure;

[0033] Figure 6 for Figure 5 Structural cross-sectional view at point AA;

[0034] Figure 7 for Figure 5 Structural cross-sectional view at point BB;

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Pressure block, 2-T-bolt, 3-Photovoltaic module frame, 4-Crossbeam, 101-U-shaped body, 102-Pressure edge, 103-Partition plate, 104-Top plate, 105-Spring, 106-Support ring, 107-Through opening, 108-Limiting groove, 109-Leaving opening, 110-Guide rod, 111-Blind opening, 201-Nut, 202-Screw part, 203-Holding part, 204-Positioning strip, 205-Positioning head, 206-Preset hole, 401-Inner folded edge. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1-7 As shown, the present invention is a fastener for photovoltaic modules based on a photovoltaic system, including a pressure block 1 and a T-bolt 2. The T-bolt 2 includes a T-shaped screw and a nut 201. The T-shaped screw includes a screw part 202 and a retaining part 203. The pressure block 1 includes a U-shaped body 101, and pressure edges 102 are provided on the outer sides of both sides of the U-shaped body 101.

[0039] A partition 103 is fixed between the two sides of the U-shaped main body 101, and a top plate 104 is fixed between the two pressing edges 102 of the U-shaped main body 101.

[0040] A support ring 106 is fixed to the top surface of the bottom edge of the U-shaped body 101 by a spring 105. The bottom edge, partition 103 and top plate 104 of the U-shaped body 101 are all provided with openings 107. The screw part 202 passes through the openings 107 of the bottom edge, partition 103 and top plate 104 of the U-shaped body 101 in sequence. The nut 201 is located on the upper surface of the top plate 104.

[0041] A positioning strip 204 is fixed through the middle of the screw part 202, and the two ends of the positioning strip 204 are located on the outside of the screw part 202 and form positioning heads 205.

[0042] Limiting grooves 108 are fixed on both sides between the partition 103 and the top plate 104. The limiting grooves 108 are fixed on the inner side of the side of the U-shaped body 101. A clearance opening 109 is provided on the partition 103 at a position opposite to the limiting grooves 108. The inner end of the clearance opening 109 extends into the through opening 107 on the partition 103.

[0043] The positioning head 205 is disposed between the support ring 106 and the partition plate 103. The bottom and top surfaces of the positioning head 205 are movably connected to the top surface of the support ring 106 and the bottom surface of the partition plate 103, respectively. The clearance opening 109 and the limiting groove 108 are both clearance-fitted with the positioning head 205.

[0044] Among them, such as Figure 7 As shown, a preset hole 206 is provided in the middle of the screw part 202, and the positioning strip 204 is interference-fitted into the preset hole 206.

[0045] Among them, such as Figure 2 and Figure 6-7 As shown, a number of guide rods 110 are fixed at the bottom end of the support ring 106, and a number of blind openings 111 are opened on the upper surface of the bottom edge of the U-shaped body 101. The bottom ends of the guide rods 110 are slidably disposed in the blind openings 111.

[0046] Among them, such as Figure 2 and Figure 6-7 As shown, a number of guide rods 110 are arranged in a ring at the bottom edge of the support ring 106, and the spring 105 is located inside the number of guide rods 110 and outside the opening 107.

[0047] Among them, such as Figure 4-7 As shown, it also includes a photovoltaic module frame 3 and a photovoltaic bracket beam 4 on the photovoltaic system. The beam 4 is a U-shaped beam. The upper inner part of both sides of the beam 4 is provided with an inner folded edge 401. The pressure block 1 is fixed to the beam 4 by a T-bolt 2. The photovoltaic module frame 3 is set between the beam 4 and the pressure edge 102.

[0048] Among them, such as Figure 3 As shown, the positioning strip 204 and the retaining part 203 on the screw part 202 are arranged in a cross shape.

[0049] The present invention provides a method for installing fasteners for photovoltaic modules based on a photovoltaic system, comprising the following steps:

[0050] In the initial state of SS01, the holding part 203 is parallel to the pressure block 1, the positioning strip 204 is confined between the partition 103 and the support ring 106 and is perpendicular to the relief opening 109, and the spring 105 is in a contracted state. Figure 1 The diagram shown is a schematic of the fastener in its initial state.

[0051] SS02 places the pressure block 1 between the two photovoltaic module frames 3. The two sides of the U-shaped body 101 are respectively attached to the opposite sides of the two photovoltaic module frames 3. The pressure edge 102 of the U-shaped body 101 is pressed on the top edge of the photovoltaic module frame 3. The holding part 203 is set in the crossbeam 4 through the gap between the two inner folded edges 401.

[0052] SS03 rotates the end of the screw section 202 located above the top plate 104 by 90 degrees. Simultaneously, the positioning head 205 rotates 90 degrees between the partition plate 103 and the support ring 106. After rotation, the positioning head 205 aligns with the clearance opening 109. The spring 105 pops out, causing the positioning head 205 to transfer into the clearance opening 109. The retaining part 203 rotates 90 degrees simultaneously, and its two ends are respectively located directly below the two inner folded edges 401 on the crossbeam 4. Figure 5-7 The diagram shown is a state diagram after the screw section 202 has rotated 90 degrees.

[0053] Rotating nut 201 in SS04 can drive screw part 202 to rise, causing clamping part 203 to fit and be fastened to the two inner folded edges 401 on crossbeam 4. At the same time, during the rise of screw part 202, positioning head 205 slides along limiting groove 108 to ensure that screw part 202 and clamping part 203 move upward in a straight line.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fastener for photovoltaic modules based on a photovoltaic system, comprising a pressure block (1) and a T-bolt (2), wherein the T-bolt (2) comprises a T-shaped screw and a nut (201), the T-shaped screw comprises a screw portion (202) and a retaining portion (203), the pressure block (1) comprises a U-shaped body (101), and both sides of the U-shaped body (101) are provided with pressure edges (102), characterized in that: A partition (103) is fixed between the two sides of the U-shaped body (101), and a top plate (104) is fixed between the two pressing edges (102) of the U-shaped body (101). The top surface of the bottom edge of the U-shaped body (101) is fixed with a support ring (106) by a spring (105). The bottom edge, partition (103) and top plate (104) of the U-shaped body (101) are all provided with openings (107). The screw part (202) passes through the openings (107) of the bottom edge, partition (103) and top plate (104) of the U-shaped body (101) in sequence. The nut (201) is located on the upper surface of the top plate (104). A positioning strip (204) is fixed through the middle of the screw part (202), and the two ends of the positioning strip (204) are located on the outside of the screw part (202) and form positioning heads (205). Limiting grooves (108) are fixed on both sides between the partition (103) and the top plate (104). The limiting grooves (108) are fixed on the inner side of the side of the U-shaped body (101). A clearance opening (109) is provided on the partition (103) at a position opposite to the limiting grooves (108). The inner end of the clearance opening (109) extends into the through opening (107) on the partition (103). The positioning head (205) is disposed between the support ring (106) and the partition plate (103). The bottom surface and top surface of the positioning head (205) are movably connected to the top surface of the support ring (106) and the bottom surface of the partition plate (103), respectively. The clearance opening (109) and the limiting groove (108) are both clearance-fitted with the positioning head (205). The positioning strip (204) and the clamping part (203) on the screw part (202) are arranged in a cross shape. When the end of the screw part (202) located above the top plate (104) is rotated, it rotates 90 degrees. The positioning head (205) rotates 90 degrees between the partition plate (103) and the support ring (106). After the rotation, the positioning head (205) is opposite to the relief opening (109). The spring (105) pops out and drives the positioning head (205) to transfer into the relief opening (109). After the clamping part (203) rotates 90 degrees, its two ends are located directly below the two inner folded edges (401) on the crossbeam (4).

2. The fastener for photovoltaic modules based on a photovoltaic system according to claim 1, characterized in that, The screw section (202) has a preset hole (206) in the middle, and the positioning strip (204) is interference-fitted into the preset hole (206).

3. A fastener for photovoltaic modules based on a photovoltaic system according to claim 1, characterized in that, The bottom end of the support ring (106) is fixed with several guide rods (110), and the bottom surface of the U-shaped body (101) is provided with several blind openings (111). The bottom end of the guide rods (110) is slidably disposed in the blind openings (111).

4. A fastener for photovoltaic modules based on a photovoltaic system according to claim 3, characterized in that, Several guide rods (110) are arranged in a ring at the bottom edge of the support ring (106), and the spring (105) is located inside the several guide rods (110) and outside the opening (107).

5. A fastener for photovoltaic modules based on a photovoltaic system according to claim 1, characterized in that, It also includes a photovoltaic module frame (3) and a photovoltaic bracket (4) on the photovoltaic system. The beam (4) is a U-shaped beam. The upper inner part of both sides of the beam (4) is provided with an inner folded edge (401). The pressure block (1) is fixed to the beam (4) by a T-bolt (2). The photovoltaic module frame (3) is set between the beam (4) and the pressure edge (102).

6. The method for installing fasteners for photovoltaic modules based on a photovoltaic system according to any one of claims 1-5, characterized in that, Includes the following steps: In the initial state of SS01, the holding part (203) is distributed parallel to the pressure block (1), the positioning strip (204) is restricted between the partition (103) and the support ring (106) and is distributed perpendicularly to the relief opening (109), and the spring (105) is in a contracted state; SS02 The pressure block (1) is placed between the two photovoltaic module frames (3). The two sides of the U-shaped body (101) are respectively attached to the opposite sides of the two photovoltaic module frames (3). The pressure edge (102) of the U-shaped body (101) is pressed on the top edge of the photovoltaic module frame (3). The holding part (203) is set in the crossbeam (4) through the gap between the two inner folded edges (401). SS03 rotates the end of the screw part (202) located above the top plate (104) by 90 degrees. The positioning head (205) rotates 90 degrees between the partition plate (103) and the support ring (106). After rotation, the positioning head (205) is opposite to the relief opening (109). The spring (105) pops out and drives the positioning head (205) to transfer into the relief opening (109). After the clamping part (203) rotates 90 degrees, both ends are located directly below the two inner folded edges (401) on the crossbeam (4). SS04 Rotating the nut (201) can drive the screw part (202) to rise, causing the clamping part (203) to fit against the two inner folded edges (401) on the crossbeam (4) for fastening. At the same time, during the rise of the screw part (202), the positioning head (205) slides along the limiting groove (108) to ensure that the screw part (202) and the clamping part (203) move upward in a straight line.

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